A. plea B. tremor C. silk D. hurdles A. play with B. drop C. auditory D. scholarship A. central heating B. wreck C. leftover D. rudely A. discredit B. advent C. he D. millionaire A. popsicle B. actual C. do exercise D. inadequate A. psychiatric B. shrewd C. boyhood D. cavern A. secure B. rapids C. preservation D. Vancouver A. stem B. paleontological C. smiling D. junk food A. listen to English B. scavenger C. tremendous D. plot A. fairly B. snag C. at weekends D. past